What is gain?

(noun): The advantageous quality of being beneficial.Synonyms:profitSee also — Additional definitions below

Gain

In electronics, gain is a measure of the ability of a circuit (often an amplifier) to increase the power or amplitude of a signal from the input to the output. It is usually defined as the mean ratio of the signal output of a system to the signal input of the same system. It may also be defined on a logarithmic scale, in terms of the decimal logarithm of the same ratio ("dB gain"). A gain greater than one (zero dB), that is, amplification, is the defining property of an active component or circuit, while a passive circuit will have a gain of less than one.

Some articles on gain:

Horn Antenna - Gain ... little loss, so the directivity of a horn is roughly equal to its gain ... The gain G of a pyramidal horn antenna (the ratio of the radiated power intensity along its beam axis to the intensity of an isotropic antenna with the same ...

Sallen–Key Topology - Application: Bandpass Filter ... An example of a non-unity-gain bandpass filter implemented with a VCVS filter is shown in Figure 5 ... an operational amplifier configured to provide non-unity-gain, it can be analyzed using similar methods as with the generic Sallen–Key topology ... given by The voltage divider in the negative feedback loop controls the gain ...

Gain - Logarithmic Units and Decibels - Example ... What is its voltage and power gain? A ... Voltage gain is simply The units V/V are optional, but make it clear that this figure is a voltage gain and not a power gain ... Using the expression for power, P = V2/R, the power gain is Again, the units W/W are optional ...

(noun): A quantity that is added.Example:"They recorded the cattle's gain in weight over a period of weeks"Synonyms:addition, increase

Famous quotes containing the word gain:

“Competition is. In every business, no matter how small or how large, someone is just around the corner forever trying to steal your ideas and build his success out of your imagination, struggling after that which you have toiled endless years to secure, striving to outdo you in each and every way. If such a competitor would work as hard to originate as he does to copy, he would much more quickly gain success.”—Alice Foote MacDougall (18671945)

“Whether a man hides his bad qualities and vices or confesses them openly, his vanity wants to gain an advantage by it in both cases: just note how subtly he distinguishes between those he will hide his bad qualities from and those he will face honestly and candidly.”—Friedrich Nietzsche (18441900)

“I have heard, in such a way as to believe it, of your recently saying that both the Army and the Government needed a Dictator. Of course it was not for this, but in spite of it, that I have given you the command. Only those generals who gain success, can set up dictators.”—Abraham Lincoln (18091865)